Pittsburgh, Pennsylvania · field elev 1,252 ft
Density Altitude at Allegheny County (KAGC)
Allegheny County sits at 1,252 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 3,083 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 29.5 | −430 ft | 36.6 | 63 ft |
| February | 32.1 | −248 ft | 39.9 | 289 ft |
| March | 40.4 | 323 ft | 49.4 | 930 ft |
| April | 52.1 | 1,110 ft | 62.5 | 1,790 ft |
| May | 61.8 | 1,745 ft | 71.9 | 2,391 ft |
| June | 69.5 | 2,239 ft | 79.1 | 2,842 ft |
| July | 73.6 | 2,498 ft | 83.0 | 3,083 ft |
| August | 72.1 | 2,403 ft | 81.3 | 2,978 ft |
| September | 65.4 | 1,977 ft | 74.8 | 2,573 ft |
| October | 54.2 | 1,248 ft | 63.3 | 1,842 ft |
| November | 43.2 | 514 ft | 51.1 | 1,043 ft |
| December | 34.4 | −89 ft | 41.0 | 364 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for KAGC
DENSITY ALTITUDE
Field elevation 1,252 ft — the air behaves like 3,083 ft.
- PRESSURE ALT
- 1,253 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Pennsylvania fields
- 31D — Inter County
Irwin · elev 1,250 ft
- G05 — Finleyville Airpark
Finleyville · elev 1,236 ft
- KFWQ — Rostraver
Monongahela · elev 1,228 ft
- 5G8 — Greensburg Jeannette Regional
Jeannette · elev 1,188 ft
- 22D — Bandel
Eighty Four · elev 1,210 ft
- KPIT — Pittsburgh International
Pittsburgh · elev 1,203 ft
- KAFJ — Washington County
Washington · elev 1,184 ft
- P45 — Mount Pleasant/Scottdale
Mount Pleasant · elev 1,160 ft
Frequently asked questions
How high does density altitude get at KAGC in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Allegheny County reaches roughly 3,083 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at KAGC on an average day?
It swings with the seasons: from roughly −430 ft at the coldest month's average temperature to about 2,498 ft at the warmest month's — all from a constant field elevation of 1,252 ft. The month-by-month table above carries the full year.
What is the field elevation of Allegheny County?
1,252 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KAGC (ICAO) / AGC (FAA), in Pittsburgh, Pennsylvania.